Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for simulating simulation splash in high speed impact

A simulation method, high-speed impact technology, applied in the field of high-speed impact simulation splash simulation

Inactive Publication Date: 2013-02-13
THE SECOND AFFILIATED HOSPITAL ARMY MEDICAL UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the embodiment of the present application provides a high-speed impact simulation splash simulation method, which can automatically perform node separation and coupling, so as to solve the problems existing in the prior art through manual operation of node separation and coupling

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for simulating simulation splash in high speed impact
  • Method for simulating simulation splash in high speed impact
  • Method for simulating simulation splash in high speed impact

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] In the embodiment of the present application, the target object is the human maxilla, simulating the splash effect after the human maxilla is penetrated by the steel ball.

[0067] First construct the 3D geometric model of the skull, and then use the finite element preprocessing software ANSA to divide the 3D geometric model of the skull into finite elements to obtain the 3D finite element model of the skull, as shown in Figure 7 As shown, it is an oblique view of the finite element model of the human skull, and the area shown at 100 in the figure is the maxilla, Figure 8 Posterior view of the finite element model for the human skull.

[0068] Then use Matlab software to Figure 7 In the area shown in 100, the nodes are automatically separated and coupled to prepare for the subsequent simulated impact. And after the automatic node separation and coupling, the finite element calculation software Ls-dyna is used to perform finite element numerical calculation on the c...

Embodiment 2

[0071] In the embodiment of the present application, the target object is a human mandible, simulating the splash effect after the human mandible is penetrated by a bullet.

[0072] Before simulating the human mandible being penetrated by bullets, first construct the 3D geometric model of the mandible, and then use the finite element pre-processing software ANSA to perform finite element division on the 3D geometric model of the skull to obtain the 3D finite element model of the mandible, as shown in Figure 10 Shown is the front view of the finite element model of the mandible, Figure 11 Posterior view of the finite element model for the mandible.

[0073] In the embodiment of this application, the finite element calculation software Ls-dyna is finally used to perform finite element numerical calculations on the three-dimensional finite element model after the failure constraint according to the preset damage mode, and obtain the splash simulation after the mandible is penet...

Embodiment 3

[0075] In the embodiment of the present application, a steel plate is selected as the target object to simulate the splash effect after the steel plate is penetrated by explosive explosion.

[0076] Same as the previous two embodiments, before the simulated steel plate is penetrated by the explosive explosion, it is also necessary to be able to construct a three-dimensional geometric model of the steel plate, such as Figure 13 Shown is the three-dimensional geometric model of the steel plate, 400 in the figure is the steel plate, and 500 is the explosive.

[0077] In the embodiment of this application, the finite element calculation software Ls-dyna is finally used to carry out finite element numerical calculations on the three-dimensional finite element model after the failure constraint according to the preset damage mode, and obtain the splash simulation of the steel plate penetrated by the explosive explosion results, such as Figure 14 Shown is the splash simulation res...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for simulating simulation splash in high speed impact. The method comprises the following steps of: dividing finite elements of a target object three-dimensional geometric model to obtain a three-dimensional finite element model; automatically separating nodes of the three-dimensional finite element model, numbering the separated nodes, and recording node information carrying all node coordinates; finding the nodes with the same coordinate position, and setting node sequence numbers of the nodes with the same coordinate position into a node set; applying node failure constraint to each node set; and calculating limit unit numerical values of the failure constrained three-dimensional finite element model according to a preset damage manner so as to obtain a splash simulation result of the object and display the splash simulation result. In the method, each step is realized by programming; the nodes are automatically separated and coupled; the node separating and coupling efficiency is greatly improved; time for explosion and penetration process simulation is shortened; and the manual operation is unnecessary, so errors caused by conventional manual operation are avoided.

Description

technical field [0001] The present application relates to the technical field of computer-aided engineering, in particular to a high-speed impact simulation splash simulation method. Background technique [0002] Explosion and penetration problems widely exist in the military field. In the process of explosion and penetration, energy is released instantaneously, and the object being affected is broken instantly by the high-speed impact of gas (or solid), resulting in splashes. [0003] CAE (Computer Aided Engineering, computer-aided engineering) technology can well simulate the explosion and penetration process. CAE technology is an important means to analyze various problems in continuous mechanics, and is widely used in aerospace, machinery, civil engineering, military, and medicine. and other fields. Its core idea is the discretization of the structure, that is, the actual structure is discretized into a finite number of regular unit combinations. The physical performanc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 雷涛张纲谭颖徽
Owner THE SECOND AFFILIATED HOSPITAL ARMY MEDICAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com